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Dear Freesurfer experts.
Now I am using preproc-sess to preprocess functional MRI data. I would like to smooth the data first and then resample them into the standard space. Hence I run 'preproc-sess -s sub001 -fsd func -stc odd -fwhm 0 -per-run' first, and then 'spatialsmooth-sess -s sub001 -fsd func -i fmcpr.odd -o fmcpr.odd.sm5 -fwhm 5', finally 'preproc-sess -s sub001 -fsd func -stc odd -surface fsaverage lhrh -mni305 -fwhm 0 -per-run' (I have already renamed the stem of smoothed file from fmcpr.odd.sm5 to fmcpr.odd). However, the preprocessed data 'fmcpr.odd.sm0.mni305.2mm.nii.gz' contains both cortical and subcortical data. If I use '-fwhm 1' this file only contains the subcortical area. May I know why and how to fix it?
About each stage embedded in 'preproc-sess', if I would like replace one stage with other software/algorithms, can I just change the name of the generated file by other software/algorithms to the name of file in this stage of 'prepoc-sess', and them rerun 'preproc-sess' while keep the flag '-update' on? For example, if I would like to use FSL/SPM to register the functional image to structural data, can I just rename the mat-file which describes the affine registration generated by FSL/SPM to 'register.dof6.mat'?
Looking forward to your kind suggestions.
Thanks and best wishes,
Lizhi